Sleeping mat cold spot.

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Gpl23
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Sleeping mat cold spot.

Post by Gpl23 »

Getting a cold spot on my hip with my Sea to Summit ultralight insulated comfort mat using my Cumulus 350 quilt at this time of year. Whats a good ultralight non bulky remedy. Closed cell foam mat, sleeping bag liner ? Please no suggestions about a new mat or new sleeping bag unless your willing to testify to my girlfriend that you made me buy them😆
woodsmith
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Re: Sleeping mat cold spot.

Post by woodsmith »

A small section of closed cell foam placed under the sleep mat at the appropriate point should help. It can do double duty as a sit pad too.
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Borderer
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Re: Sleeping mat cold spot.

Post by Borderer »

I had that same trouble with the same mat last week. I had a reflective sheet under the mat which really should have solved the problem, but it didn't help. In the end I put an extra layer (a padded gilet) between my hip and the mat and that worked.
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Bearbonesnorm
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Re: Sleeping mat cold spot.

Post by Bearbonesnorm »

I had a reflective sheet under the mat which really should have solved the problem,
If it's just a reflective sheet, then it'll make no difference at all because they have no insulation properties. CCF, bubblewrap or even reflective bubblewrap will work :wink:
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Borderer
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Re: Sleeping mat cold spot.

Post by Borderer »

Bearbonesnorm wrote: Sun Jan 03, 2021 1:12 pm
I had a reflective sheet under the mat which really should have solved the problem,
If it's just a reflective sheet, then it'll make no difference at all because they have no insulation properties. CCF, bubblewrap or even reflective bubblewrap will work :wink:
I have this one. I bought it off someone on here a while ago.

https://www.treadlitegear.co.uk/ripstop ... r-88-p.asp
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Bearbonesnorm
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Re: Sleeping mat cold spot.

Post by Bearbonesnorm »

I have this one. I bought it off someone on here a while ago.

https://www.treadlitegear.co.uk/ripstop ... r-88-p.asp
From what I can tell Bridget, that has little or no insulation value. You lose very little heat to the ground via radiation.
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summittoppler
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Re: Sleeping mat cold spot.

Post by summittoppler »

As we're on the topic and not waiting to hijack the thread, quick question....

I was tempted to bag my first 'snow camp' the other night but jibbed out. If in a tent or under a tarp, what do you suggest going under the mat which would reduce the cold coming through?
My mat is an Exped Lite 5M which hasn't given me any issues previously. Thanks
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Bearbonesnorm
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Re: Sleeping mat cold spot.

Post by Bearbonesnorm »

Some laminate floor ccf underlay will work Jeff but a mat with an R value (old standard) of 4 or more should be okay on snow.
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summittoppler
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Re: Sleeping mat cold spot.

Post by summittoppler »

Bearbonesnorm wrote: Sun Jan 03, 2021 1:57 pm Some laminate floor ccf underlay will work Jeff but a mat with an R value (old standard) of 4 or more should be okay on snow.
Thanks Stu.
So is that the foamy stuff about 3mm thick that can be rolled?
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Bearbonesnorm
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Re: Sleeping mat cold spot.

Post by Bearbonesnorm »

That's the stuff Jeff.
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benp1
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Re: Sleeping mat cold spot.

Post by benp1 »

I use a CCF sit mat regularly, would work well for an extra bit of hip insulation

I used my thermarest neoair with a CCF mat on snow. Have since upgraded to an xtherm and would happily use that directly on snow
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